﻿//*********************************************************//
//    Copyright (c) Microsoft. All rights reserved.
//    
//    Apache 2.0 License
//    
//    You may obtain a copy of the License at
//    http://www.apache.org/licenses/LICENSE-2.0
//    
//    Unless required by applicable law or agreed to in writing, software 
//    distributed under the License is distributed on an "AS IS" BASIS, 
//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 
//    implied. See the License for the specific language governing 
//    permissions and limitations under the License.
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//*********************************************************//

using System;
using System.Collections.Generic;

namespace Microsoft.NodejsTools.Npm.SPI {
    internal abstract class AbstractNpmSearchComparer : IComparer<IPackage> {

        protected int CompareBasedOnKeywords(IPackage x, IPackage y) {
            if (x.Keywords != null && y.Keywords != null) {
                return string.Compare(
                    string.Join(", ", x.Keywords),
                    string.Join(", ", y.Keywords),
                    StringComparison.CurrentCulture);
            }

            return 0;
        }

        public abstract int Compare(IPackage x, IPackage y);
    }
}
